Help me out please!! NO LINKS PLEASE:D

What is the surface area of the right rectangular prism shown in the figure?
A. 143m^2
B. 286m^2
C. 315m^2
D. 486m^2

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Write the point slope form of the equation of the line passing through the points (-5, 6) and (0.1).

Javon needs two 5 foot pieces of rope for the sides of the ladder. she needs 7 pieces of rope each 18 inches long for the steps. how many feet of rope does patty need to make the ladder?